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Emperor Penguins Are Teeming in Antarctica

Antarctica has twice as many emperor penguins as scientists had thought, according to a new study using satellite imagery in the first comprehensive survey of one of the world's most iconic birds.

British and U.S. geospatial mapping experts reported Friday in the journal PLoS One that they had counted 595,000 emperor penguins living in 46 colonies along the coast of Antarctica, compared with previous estimates of 270,000 to 350,000 penguins based on surveys of just five colonies. The researchers also discovered four previously...

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